Shark Fin vs Polished Concrete
Where Shark Fin belongs to Behr's range, Polished Concrete is a Sherwin-Williams color. Both sit in the grey family, which is useful context if you're narrowing within a single hue direction. They have nearly identical light reflectance values (31 vs 32), so they'll read as similarly Medium in most lighting conditions. Shark Fin runs green while Polished Concrete is decidedly neutral, which means they'll respond very differently to warm vs cool light sources. The ΔE 3.4 gap is real but not dramatic — close enough to use together, distinct enough to matter as a choice. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.
Color Details
Shark Fin vs Polished Concrete Simulated Comparison
5 simulated room previews — drag the slider on each to see Shark Fin on one side and Polished Concrete on the other.
Digital color is approximate. These simulations are generated from the manufacturer's hex values and overlaid on grayscale room photos — your screen's calibration, brightness, and viewing angle all affect how they render. Before committing to either color, test physical samples in your own space under the light you actually live with.
More Shark Fin comparisons
See how Shark Fin stacks up against other well-photographed colors across different brands and tones.
